Pietro Passacantilli

8-Epiloganin, an iridoid glucoside from Odontites verna☆

Abstract Odontites verna subsp. serotina contains besides odontoside, aucubin, mussaenoside, shanzhiside methyl ester and catalpol, a new iridoid glucoside, 8-epiloganin.

5-deoxystansioside, an iridoid glucoside from Tecoma stans☆

Abstract In addition to plantarenaloside and stansioside, a new iridoid glucoside with a formyl group at C-4 has been isolated from Tecoma stans. The new glucoside was shown to be 5-deoxystansioside by 13C NMR and 1H NMR spectroscopy.

6-O-β-d-Xylopyranosylaucubin from Verbascum sinuatum

Abstract Verbascum sinuatum contains, in addition to aucubin and harpagide, four new highly polar iridoid glycosides one of which has been identified as 6- O -β- d -xylopyranosylaucubin on the basis of spectral data and chemical modifications.

6-O-α-Sinuatosylaucubin from Verbascum sinuatum☆

Abstract From Verbascum sinuatum , besides aucubin, harpagide, 6- O -β- d -xylopyranosylaucubin and sinuatol (6- O - α- l -rhamnopyranosylaucubin), a new iridoid glycoside, sinuatoside, has been isolated and its structure elucidated as 6- O -(3- O -β- d -xylopyranosyl)α- d -galactopyranosyl aucubin on the basis of spectral data and chemical modifications. For the new disaccharide unit of the latter compound the name sinuatose is proposed.